/*
 * keyEdge.hpp
 * Copyright (c) 2010 Daisuke Okanohara All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef KEYEDGE_HPP__
#define KEYEDGE_HPP__

#include "fujimapCommon.hpp"

#include <stdint.h>
#include <string>
#include <vector>
#include <fstream>

#include <iostream>

namespace fujimap_tool{

/*
 * Intermediated representation of key/value
 * used in HashMap. 
 */

uint64_t hash(const char* str, size_t len);
void hash(const char* str, const size_t len, const uint64_t seed,  
		 uint64_t& a, uint64_t& b, uint64_t& c);

struct KeyEdge{
  KeyEdge(); 
  KeyEdge(const char* str, const size_t len, const uint64_t code,
	  const uint64_t seed); 

  uint64_t get(uint64_t i, uint64_t bn) const{
    return (v[i] % bn) + bn * i;
  }

  bool operator < (const KeyEdge& k) const {
    for (uint64_t i = 0; i < R; ++i){
      if (v[i] != k.v[i]) return v[i] < k.v[i];
    }
    return false;
  }

  void save(std::ofstream& ofs);
  void load(std::ifstream& ifs);

  uint64_t v[3];
  uint64_t code;
};

}

#endif // KEYEDGE_HPP__
